nach Greenes Diskographie bei allmusic.com - Siehe auch: Tim Neely: Goldmine. Country and Western. 2. Auflage. Krause Publications, Iola / Wisconsin, 2001, S. 182; dort auch alle weiteren Alben von Lorne Greene.
Bruce R. Leiby, Linda F. Leiby: A Reference Guide to Television's Bonanza: Episodes, Personnel and Broadcast History. McFarland, Jefferson 2005, ISBN 0-7864-2268-8, S. 196. (books.google.de)
„Perhaps it had something to do with the Beatlemania that dominated pop culture in 1964 that even a spoken word record about the Old West sung by an aging, uncharismatic character actor could be a smash hit if it had the name of a Beatle in the title.“ – Brian Boone: I Love Rock ’n’ Roll (Even When I Hate It). TarcherPerigee, New York City 2011, ISBN 978-0-399-53679-3, o. S. (Auszug bei Google Books).
David D. Johnson: John Ringo: King of the Cowboys. His Life and Times from the Hoo Doo War to Tombstone. University of North Texas Press, Denton 2008, ISBN 978-1-57441-243-7, S. XI (Auszug bei Google Books).
„‚Ringo‘ is, in all respects, a cash-in record. […] Greene’s dry newsreader’s account […] number one for one week, a position the song itself doesn’t really merit. […] Its spoken word verses and faceless chorus ape Jimmy Dean’s neo-folktale Big Bad John. It’s a lot less inspiring [and …] it doesn’t even half-attempt a hook.“ – Kritik des Songs bei nohardchords.wordpress.com
